CN108008014A - A kind of detection device and detection method for small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect - Google Patents
A kind of detection device and detection method for small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect Download PDFInfo
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- CN108008014A CN108008014A CN201711158000.4A CN201711158000A CN108008014A CN 108008014 A CN108008014 A CN 108008014A CN 201711158000 A CN201711158000 A CN 201711158000A CN 108008014 A CN108008014 A CN 108008014A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
- G01N29/0609—Display arrangements, e.g. colour displays
- G01N29/0645—Display representation or displayed parameters, e.g. A-, B- or C-Scan
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/06—Visualisation of the interior, e.g. acoustic microscopy
- G01N29/0654—Imaging
- G01N29/069—Defect imaging, localisation and sizing using, e.g. time of flight diffraction [TOFD], synthetic aperture focusing technique [SAFT], Amplituden-Laufzeit-Ortskurven [ALOK] technique
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/225—Supports, positioning or alignment in moving situation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/267—Welds
- G01N2291/2675—Seam, butt welding
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Abstract
The invention discloses a kind of detection device and detection method for small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect, detection device includes phased array probe stent, flexible voussoir and phased array probe, the bottom surface of phased array probe stent is equipped with axial notch, the bottom surface centre position of phased array probe stent is equipped with transverse concave groove, the middle part of phased array probe stent is equipped with cavity, flexible voussoir is inlaid solid in cavity, phased array probe is placed in flexible voussoir upper surface and is fixedly connected with phased array probe stent, the left and right ends of phased array probe stent are respectively equipped with a fixedly connected part.Detection method includes：Instrument assembly and connection, the adjusting of abrasionproof nail, instrument setting, sensitivity setting, encoder calibration, scanning equipment are fixed, data acquisition and data evaluation.The detection of small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect can be realized using this detection device and detection method, so as to ensure boiler heating surface dissimilar steel butt weld product quality.
Description
Technical field
The present invention relates to technical field of nondestructive testing, is used for small-bore pipe dissimilar steel butt weld layer more particularly, to one kind
Between incomplete fusion defect detection device and detection method.
Background technology
There are a large amount of small-bore pipes in Power Station Boiler Heating Surface component high temperature reheater and high temperature superheater product（Diameter
Typically smaller than it is equal to 100mm）Dissimilar steel butt weld, weld seam need oval using ray according to examination criteria requirement after being welded
Imaging or vertical image checking, due to being influenced be subject to sensitivity of film angle, can make in weld seam lack of inter-run fusion defect substantially with
Sensitivity of film direction is vertical, causes it to be difficult to form density difference on film, so that ray detection can not detect weld seam
Lack of inter-run fusion defect.
Further, since small-bore pipe dissimilar steel butt weld is organized as austenite, so that using ultrasound examination
Become extremely difficult, or even can not detect, its difficulty is mainly reflected in：
1. coarse grains, anisotropy, heterogeneous interface harmony beam attenuation so that detection process signal-to-noise ratio degradation, acoustic beam are turned round
Bent, generation spurious signal, causes ultrasound examination difficult, or even can not detect；
2. using hot wire TIG welding during welding, multi-pass welding shaping, weld seam has reinforcement, and scanning process can not pass through weld reinforcement；
3. docking, pipe diameter is small, and wall thickness is big, causes coupling difficult；
4. slope type using the U-shaped groove of narrow gap and adds Do in inside pipe wall weld seam mother metal edge machine, so as to add ultrasonic wave
Detect signal identification difficulty；
It follows that either ray detection or ultrasound examination cannot all meet small-bore pipe dissimilar steel butt weld interlayer
The needs of incomplete fusion defects detection, so as to cause production joint quality cannot be guaranteed.
The content of the invention
The technical problems to be solved by the invention are to provide one kind and are not melted for small-bore pipe dissimilar steel butt weld interlayer
The detection device and detection method of defect are closed, after this detection device and detection method, is realized to small-bore pipe dissimilar steel
The detection of butt weld lack of inter-run fusion defect, such defect can not be detected by overcoming ray detection and ultrasound examination
Problem, ensure that boiler heating surface dissimilar steel butt weld product quality.
The technical solution adopted by the present invention to solve the technical problems is：One kind is used for small-bore pipe dissimilar steel butt weld
The detection device of lack of inter-run fusion defect, including phased array probe stent, flexible voussoir and be connected with phased array detection device
Phased array probe, the shape of the phased array probe stent is cuboid, and the bottom surface of phased array probe stent is equipped with along it
Axial arranged shape is the axial notch of arc, and the arc size of the axial notch is identical with the outside diameter for docking pipeline；Phase
The bottom surface centre position of battle array probe bracket is controlled equipped with the transverse concave groove along its lateral arrangement；Set in the middle part of phased array probe stent
There is a cavity for running through phased array probe stent；The shape and the cavity shape one of phased array probe stent of the flexibility voussoir
Cause, flexible voussoir is inlaid solid in the cavity of phased array probe stent, and flexible voussoir bottom surface is equipped with and phased array probe mid-stent
The corresponding voussoir groove of arc groove that bottom surface is lacked；The phased array probe be placed in flexible voussoir upper surface with it is described
It is fixedly connected at the corresponding position of transverse concave groove and with phased array probe stent；The left and right ends difference of phased array probe stent
It is used to for phased array probe stent to be relatively fixed the fixedly connected part on docking pipeline equipped with one.
Further, the bottom surface four corners of the phased array probe stent are equipped with an abrasionproof nail.
Further, the fixedly connected part is flexible rubber band or the fixed company with certain rigidity and bending ability
Fitting, the both ends of fixedly connected part are by being located at the threaded hole of phased array probe bracket end both sides and big with the threaded hole
The small bolt to match is fixed on the end of phased array probe stent, and the part between fixedly connected part both ends is then wrapped in pair
On adapter road, phased array probe stent is relatively fixed on docking pipeline.
Further, the top surface centre position of the phased array probe stent be equipped with two it is coaxial and along its lateral arrangement
Rack groove, be respectively equipped with one piece of convex block at flexibility voussoir and the corresponding position of two stands groove, it is described
Two convex blocks are stuck in the two stands groove, flexible voussoir are stuck in the cavity of phased array probe stent；It is described
It is respectively equipped with a threaded hole on the bottom surface of two stands groove, phased array probe passes through the spiral shell that matches with the threaded hole size
The through hole being correspondingly arranged on bolt and convex block with threaded hole is fixed on phased array probe stent.
Further, the cavity is rectangular enclosure, and the flexibility voussoir is rectangle voussoir, and the transverse concave groove is arc
Groove, the rack groove are rectangular recess, and the convex block is rectangular cam.
Further, the flexible voussoir is made of polysulfone material.
Do not melted using above-mentioned detection device detection small-bore pipe dissimilar steel butt weld interlayer present invention also offers one kind
The method for closing defect, the detection method comprise the following steps：
1）Instrument assembly and connection：Phased array probe, flexible voussoir, encoder and phased array probe bracket assembled are integrated, and
Phased array probe is set to be connected on phased array detection device；
2）Abrasionproof nail is adjusted：According to docking pipe diameter and weld reinforcement, abrasionproof is followed closely into length adjustment to appropriate length, with after an action of the bowels
It is continuous transverse concave groove is coupled with weld reinforcement well；
3）Instrument is set：Compressional wave is selected according to docking pipe diameter, wall thickness and fixed ripple signal, ultrasound examination waveform, is adjusted
Display delayed and scope, instrument interface show A, B, D scanning view at the same time；
4）Sensitivity is set：Reflection wave amplitude is adjusted using reference block and reaches 80% ± 5%, then improves 6dB as Scanning sensitivity；
5）Encoder calibration：Encoder is rotated into a circle along tested mother metal outside diameter, encoder errors are less than 1%；
6）Scanning equipment is fixed：The phased array probe stent assembled is relatively fixed by the fixedly connected part of its rear and front end
On docking pipeline, the axial direction of phased array probe stent is axially consistent with docking pipeline, and phased array probe is placed exactly in pair
Connect the surface of pipeline-weld, and make phased array probe cradle bottom surface transverse concave groove and dock pipeline weld reinforcement couple it is good
It is good；
7）Data acquisition：Clicked on phased array detection device and start to detect, and rotate phased array probe stent, visit phased array
Head carries out data acquisition when making circumferential movement along weld reinforcement, after phased array probe rotates a circle data acquisition terminate and protect
Deposit；
8）Data evaluation：After transferring gathered data and carrying out data fusion and linkage processing, interlayer is measured not by A sweep view
Initial position, depth and the length working as discharge amplitude and depth, lack of inter-run fusion defect is measured by B-scan view of fusion defect
Degree, position of the view dynamic observation lack of inter-run fusion defect in weld seam is scanned by D.
Further, the step 1）In, phased array probe is using 2.5-10MHz, 16-64 chips, array element center
Spacing is the phased array probe of 0.2-1.0mm.
Further, the step 2）In, according to docking pipe diameter and weld reinforcement, by using interior hex tool tune
Save abrasionproof and follow closely length to appropriate length, subsequently to make transverse concave groove be coupled well with weld reinforcement.
Further, the step 3）In, ultrasound examination waveform select compressional wave, and refraction angle be respectively -10 ° to -
2 °, 0 °, 2 ° to 10 °, the depth of focus docks pipeline wall thickness for 1/4-1.
The beneficial effects of the invention are as follows：The detection device of the present invention is visited by phased array probe stent, flexible voussoir, phased array
Head and phased array detection device composition, while coupled well with docking outer diameter tube by being set in phased array probe cradle bottom surface
Axial notch and good transverse concave groove is coupled with butt weld reinforcement, and phased array probe is arranged in flexible voussoir upper table
Face when using this detection with the corresponding position of weld reinforcement, so that phased array probe couples well with weld reinforcement, filling
Put when being detected operation, this detection device need to be only directly placed to the surface of butt weld to be detected, afterwards
Phased array probe stent is rotated by using external force, makes it drive phased array probe to rotate a circle around weld seam and carries out data in real time
Collection, while phased array A, B, D scanning view is formed on phased array detection device, by phased array A, B, D scanning view are shown
What the information shown can obtain weld seam lack of inter-run fusion defect works as the position and depth of discharge amplitude, lack of inter-run fusion defect in weld seam
The information such as degree, initial position and length, it is achieved thereby that the inspection to small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect
Survey, overcome ray detection and problem that ultrasound examination can not be detected such defect, ensure that boiler heating surface is different
Kind steel butt weld product quality.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of phased array probe stent；
The structure diagram that Fig. 2 is phased array probe stent, flexible voussoir and phased array probe are assembled into one；
Fig. 3 is that embodiment detection device using the present invention detects small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect
Structure diagram；
Fig. 4 scans view for phased array A sweep view and D；
Fig. 5 is phased array B-scan view；
Fig. 6 is metallographic specimen figure；
The metallographic microscope display figure that Fig. 7 is sample 3-5；
In figure mark for：1- phased array probe stents, 2- flexibility voussoirs, 3- phased array detection devices, 4- phased array probes, 5- axis
To groove, 6- docking pipelines, 7- transverse concave grooves, 8- cavitys, 9- fixedly connected parts, 10- abrasionproofs nail, 11- threaded holes, 12- stents
Groove, 13- weld seams.
Embodiment
The present invention is further described with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, the present invention is used for the detection dress of small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect
Put, including phased array probe stent 1, flexible voussoir 2 and the phased array probe 4 being connected with phased array detection device 3, it is described phased
The shape of battle array probe bracket 1 is cuboid, and it is arc that the bottom surface of phased array probe stent 1, which is equipped with the shape arranged axially along,
The axial notch 5 of shape, the arc size of the axial notch 5 is identical with the outside diameter for docking pipeline 6, by phased array probe branch
1 bottom surface of frame sets the arc axial notch 5 to match with docking 6 outside diameter of pipeline, can make phased array probe stent 1 and butt tube
It can be coupled between road 6 good；It is arc that the bottom surface centre position of phased array probe stent 1, which is equipped with along the shape of its lateral arrangement,
Transverse concave groove 7, the transverse concave groove 7 can with butt weld reinforcement good coupling, beneficial to not melted to the interlayer of weld seam 13 subsequently
Close defects detection；The middle part of phased array probe stent 1 is equipped with a rectangular enclosure 8 for running through phased array probe stent 1；Described
Flexible voussoir 2 is made of polysulfone material, its shape is consistent with 8 shape of rectangular enclosure of phased array probe stent 1, is rectangular flexible
Voussoir, flexible voussoir 2 are inlaid solid in the cavity 8 of phased array probe stent 1, and are equipped with flexible 2 bottom surface of voussoir and are visited with phased array
The corresponding voussoir groove of arc groove that 1 middle part bottom surface of head bracket is lacked, when flexible voussoir 2 is embedded in phased array probe branch
After in the cavity 8 of frame 1, the arc voussoir groove of flexible 2 bottom surface of voussoir can fill up phased array probe stent 1 because opening up cavity 8 and
The part arc axial notch 5 of missing, so that phased array probe stent 1 can couple well with docking pipeline 6；Phased array is visited
The top surface centre position of head bracket 1 be equipped with two it is coaxial and along the rectangle support groove 12 of its lateral arrangement, the flexible wedge
With being respectively equipped with one piece of rectangular cam at the 12 corresponding position of two stands groove, two convex blocks are stuck in block 2
In the two stands groove 12, so that flexible voussoir 2 is stuck in the cavity 8 of phased array probe stent 1；The two stands are recessed
Further respectively have a threaded hole 11 on the bottom surface of groove 12, the phased array probe 4 be placed in flexible 2 upper surface of voussoir with it is described
At 7 corresponding position of transverse concave groove and on bolt and convex block by matching with 11 size of threaded hole with threaded hole
11 through holes being correspondingly arranged are fixed on phased array probe stent 1；The left and right ends of phased array probe stent 1 are respectively equipped with one
For phased array probe stent 1 to be relatively fixed to the fixedly connected part 9 on docking pipeline 6, the fixedly connected part 9 is soft
Property rubber band or the fixedly connected part with certain rigidity and bending ability, the both ends of fixedly connected part 9 it is phased by being located at
The threaded hole 11 of 1 end both sides of battle array probe bracket and the bolt to match with 11 size of threaded hole are fixed on phased array probe
The end of stent 1, the part between 9 both ends of fixedly connected part are then wrapped on docking pipeline 6, so that by phased array probe branch
Frame 1 is relatively fixed on docking pipeline 6, in order to be detected using this detection device to 13 lack of inter-run fusion defect of weld seam
When, it can easily rotate phased array probe stent 1 and phased array visits 4, so that data acquisition operates；Phased array probe branch
The bottom surface four corners of frame 1 are equipped with an abrasionproof nail 10, by setting abrasionproof to follow closely 10 in 1 bottom surface corner of phased array probe stent,
The length of abrasionproof nail 10 can be adjusted by using interior hex tool, to be subsequently fixed on by phased array probe stent 1
When docking on pipeline 6, transverse concave groove 7 can be made to be coupled with weld reinforcement well, so that beneficial to 13 lack of inter-run fusion defect of weld seam
Detection result.
Do not melted using above-mentioned detection device detection small-bore pipe dissimilar steel butt weld interlayer present invention also offers one kind
The method for closing defect, the detection method comprise the following steps：
1）Instrument assembly and connection：Phased array probe 4, flexible voussoir 2, encoder and phased array probe stent 1 are assembled into one,
And phased array probe 4 is set to be connected on phased array detection device 3；
2）Abrasionproof nail is adjusted：According to docking pipe diameter and weld reinforcement, abrasionproof is followed closely into 10 length adjustments to appropriate length, so as to
Subsequently transverse concave groove 7 is set to be coupled with weld reinforcement well；
3）Instrument is set：Compressional wave is selected according to docking pipe diameter, wall thickness and fixed ripple signal, ultrasound examination waveform, is adjusted
Display delayed and scope, instrument interface show A, B, D scanning view at the same time；
4）Sensitivity is set：Reflection wave amplitude is adjusted using reference block and reaches 80% ± 5%, then improves 6dB as Scanning sensitivity；
5）Encoder calibration：Encoder is rotated into a circle along tested mother metal outside diameter, encoder errors are less than 1%；
6）Scanning equipment is fixed：The phased array probe stent 1 assembled is relatively solid by the fixedly connected part 9 of its rear and front end
It is scheduled on docking pipeline 6, the axial direction of phased array probe stent 1 is axial consistent with docking pipeline 6, and makes phased array probe 4 just
Positioned at the surface of docking 6 weld seam 13 of pipeline, and make weldering of the transverse concave groove 7 of 1 bottom surface of phased array probe stent with docking pipeline 6
It is good to stitch reinforcement coupling；
7）Data acquisition：Clicked on phased array detection device 3 and start to detect, and rotate phased array probe stent 1, make phased array
Probe 4 carries out data acquisition when making circumferential movement along weld reinforcement, after phased array probe 4 rotates a circle data acquisition terminate simultaneously
Preserve；
8）Data evaluation：After transferring gathered data and carrying out data fusion and linkage processing, interlayer is measured not by A sweep view
Initial position, depth and the length working as discharge amplitude and depth, lack of inter-run fusion defect is measured by B-scan view of fusion defect
Degree, position of the view dynamic observation lack of inter-run fusion defect in weld seam is scanned by D.
Wherein, the step 1）In, phased array probe 4 is using 2.5-10MHz, 16-64 chips, array element center spacing
For the phased array probe of 0.2-1.0mm；The step 2）In, according to docking pipe diameter and weld reinforcement, by using interior six
Angle instrument adjusts abrasionproof and follows closely 10 length to appropriate length, subsequently to make transverse concave groove 7 be coupled well with weld reinforcement；The step
Rapid 3）In, ultrasound examination waveform select compressional wave, and refraction angle be -10 ° to -2 °, 0 °, 2 ° to 10 °, depth of focus 1/4-
1 docking pipeline wall thickness.
The detection device of the present invention is by phased array probe stent, flexible voussoir, phased array probe and phased array detection device
Composition, while by being set in phased array probe cradle bottom surface good axial notch is coupled with docking outer diameter tube and with docking
Weld reinforcement couples good transverse concave groove, and it is corresponding with weld reinforcement that phased array probe is arranged in flexible voussoir upper surface
Position at so that phased array probe couples well with weld reinforcement, when being detected operation using this detection device, only
This detection device need to be directly placed to the surface of butt weld to be detected, and be rotated afterwards by using external force phased
Battle array probe bracket, makes it drive phased array probe to rotate a circle around weld seam and carries out data acquisition in real time, while is examined in phased array
Phased array A, B, D scanning view is formed on measurement equipment, by phased array A, the information that B, D scanning view are shown can obtain weld seam
Lack of inter-run fusion defect when discharge amplitude, lack of inter-run fusion defect position and depth in weld seam, initial position and length etc.
Information, it is achieved thereby that the detection to small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect, and detection result is very good
It is good, overcome ray detection and problem that ultrasound examination can not be detected such defect, ensure that boiler heating surface is different
Kind steel butt weld product quality.
Embodiment
For the embodiment of the present invention to detect a kind of specification as φ 45x10.5mm, material is respectively the docking of T91 and TP347
Illustrated exemplified by austenitic weld seam lack of inter-run fusion defect, as shown in Figure 3.
It is as follows to the detection method of above-mentioned butt weld lack of inter-run fusion defect：
1）Instrument assembly and connection：By 5MHz, 64 chips, array element center spacing is 0.6mm phased array probes, flexible voussoir, coding
Device and phased array probe bracket assembled are integrated, and phased array probe is connected on phased array detection device；
2）Abrasionproof nail is adjusted：According to docking pipe diameter and weld reinforcement, abrasionproof is followed closely into length tune by using interior hex tool
Section is to appropriate length, subsequently to make transverse concave groove be coupled well with weld reinforcement；
3）Instrument is set：According to docking pipe diameter, wall thickness and fixed ripple signal, ultrasound examination waveform selects compressional wave, and rolls over
Firing angle degree is respectively -10 °, and 0 °, 10 °, the depth of focus is 2/3 docking pipeline wall thickness, adjusts display delayed and scope, instrument interface
A, B, D scanning view are shown at the same time；
4）Sensitivity is set：Reflection wave amplitude is adjusted using reference block and reaches 80% ± 5%, then improves 6dB as Scanning sensitivity；
5）Encoder calibration：Encoder is rotated into a circle along tested mother metal outside diameter, encoder errors are less than 1%；
6）Scanning equipment is fixed：The phased array probe stent assembled is relatively fixed by the fixedly connected part of its rear and front end
On docking pipeline, the axial direction of phased array probe stent is axially consistent with docking pipeline, and phased array probe is placed exactly in pair
Connect the surface of pipeline-weld, and make phased array probe cradle bottom surface transverse concave groove and dock pipeline weld reinforcement couple it is good
It is good；
7）Data acquisition：Clicked on phased array detection device and start to detect, and phased array probe branch is rotated by using external force
Frame, carries out data acquisition when phased array probe is made circumferential movement along weld reinforcement, phased array probe rotates data after a circle
Collection terminates and preserves；
8）Data evaluation：After transferring gathered data and carrying out data fusion and linkage processing, interlayer is measured not by A sweep view
Initial position, depth and the length working as discharge amplitude and depth, lack of inter-run fusion defect is measured by B-scan view of fusion defect
Degree, position of the view dynamic observation lack of inter-run fusion defect in weld seam is scanned by D.
After being detected by using above-mentioned detection device and detection method to sample pipe weld seam, and the data to collecting into
After row fusion and linkage processing, the display information of Fig. 4 and Fig. 5 is obtained, wherein, Fig. 4 regards for phased array A sweep view and D scannings
Figure, can measure the depth of lack of inter-run fusion defect by A sweep view and work as discharge amplitude, and scanning view by D can dynamic
Observe position and depth of the lack of inter-run fusion defect in weld seam；And Fig. 5 is phased array B-scan view, pass through B-scan view
It is observed that the initial position of lack of inter-run fusion defect and it is measurable go out lack of inter-run fusion defect depth and length.
In order to verify the validity of the accuracy of testing result and detection method, it is sampled in B-scan view, respectively
The position 3-3 that there are lack of inter-run fusion defect, 3-5 and intact position 3-1,3-2,3-4 are chosen, as shown in fig. 6, passing through afterwards
Metallographic microscope observes above-mentioned sampling point 3-5, observes the result is shown in Fig. 7, it can be seen from figure 7 that sampling metallographic solution
Cut open that result is consistent with foregoing testing result, so as to demonstrate the validity of this detection method, realize to small-bore pipe dissimilar steel
The detection of butt weld lack of inter-run fusion defect.
Claims (10)
- A kind of 1. detection device for small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect, it is characterised in that：Including Phased array probe stent（1）, flexible voussoir（2）With with phased array detection device（3）Connected phased array probe（4）, the phase Control battle array probe bracket（1）Shape be cuboid, phased array probe stent（1）Bottom surface be equipped with the shape arranged axially along Shape is the axial notch of arc（5）, the axial notch（5）Arc size with docking pipeline（6）Outside diameter it is identical；Phased array Probe bracket（1）Bottom surface centre position be equipped with along its lateral arrangement transverse concave groove（7）；Phased array probe stent（1）'s Middle part is equipped with a cavity for running through phased array probe stent（8）；The flexibility voussoir（2）Shape and phased array probe stent （1）Cavity（8）Shape is consistent, flexible voussoir（2）It is inlaid solid in phased array probe stent（1）Cavity（8）It is interior, flexible voussoir （2）Bottom surface is equipped with and phased array probe stent（1）The corresponding voussoir groove of arc groove that middle part bottom surface is lacked；Described Phased array probe（4）It is placed in flexible voussoir（2）Upper surface and the transverse concave groove（7）Visited at corresponding position and with phased array Head bracket（1）It is fixedly connected；Phased array probe stent（1）Left and right ends be respectively equipped with one and be used for phased array probe stent （1）It is relatively fixed in docking pipeline（6）On fixedly connected part（9）.
- 2. the detection device according to claim 1 for small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect, It is characterized in that:The phased array probe stent（1）Bottom surface four corners be equipped with abrasionproof nail（10）.
- 3. the detection device according to claim 2 for small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect, It is characterized in that:The fixedly connected part（9）Being fixedly connected for flexible rubber band or with certain rigidity and bending ability Part, fixedly connected part（9）Both ends by being located at phased array probe stent（1）The threaded hole of end both sides（11）With with it is described Threaded hole（11）The bolt that size matches is fixed on phased array probe stent（1）End, fixedly connected part（9）Both ends it Between part be then wrapped in docking pipeline（6）On, by phased array probe stent（1）It is relatively fixed in docking pipeline（6）On.
- 4. the detection device according to claim 3 for small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect, It is characterized in that:The phased array probe stent（1）Top surface centre position be equipped with two it is coaxial and along its lateral arrangement Rack groove（12）, the flexibility voussoir（2）With the two stands groove（12）Be respectively equipped with corresponding position one piece it is convex Block, two convex blocks are stuck in the two stands groove（12）It is interior, by flexible voussoir（2）It is stuck in phased array probe branch Frame（1）Cavity（8）It is interior；The two stands groove（12）Bottom surface on be respectively equipped with a threaded hole（11）, phased array probe （4）By with the threaded hole（11）On the bolt and convex block that size matches with threaded hole（11）The through hole being correspondingly arranged is consolidated It is scheduled on phased array probe stent（1）On.
- 5. the detection device according to claim 4 for small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect, It is characterized in that:The cavity（8）For rectangular enclosure, the flexibility voussoir（2）For rectangle voussoir, the transverse concave groove（7）For Arc groove, the rack groove（12）For rectangular recess, the convex block is rectangular cam.
- 6. the detection device according to claim 5 for small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect, It is characterized in that:The flexible voussoir（2）It is made of polysulfone material.
- A kind of 7. detection device detection small-bore pipe dissimilar steel butt weld layer in 1-6 using claim described in any one Between incomplete fusion defect method, it is characterised in that：Comprise the following steps：1）Instrument assembly and connection：By phased array probe（4）, flexible voussoir（2）, encoder and phased array probe stent（1）Assembling It is integrated, and makes phased array probe（4）It is connected to phased array detection device（3）On；2）Abrasionproof nail is adjusted：According to docking pipe diameter and weld reinforcement, abrasionproof is followed closely（10）Length adjustment to appropriate length, with Continuing after an action of the bowels makes transverse concave groove（7）Coupled with weld reinforcement well；3）Instrument is set：Compressional wave is selected according to docking pipe diameter, wall thickness and fixed ripple signal, ultrasound examination waveform, is adjusted Display delayed and scope, instrument interface show A, B, D scanning view at the same time；4）Sensitivity is set：Reflection wave amplitude is adjusted using reference block and reaches 80% ± 5%, then improves 6dB as Scanning sensitivity；5）Encoder calibration：Encoder is rotated into a circle along tested mother metal outside diameter, encoder errors are less than 1%；6）Scanning equipment is fixed：The phased array probe stent that will be assembled（1）Pass through the fixedly connected part of its rear and front end（9）Phase To being fixed on docking pipeline（6）On, phased array probe stent（1）Axial direction with docking pipeline（6）It is axial consistent, and make phased array Probe（4）It is placed exactly in docking pipeline（6）Weld seam（13）Surface, and make phased array probe stent（1）The transverse direction of bottom surface is recessed Groove（7）With docking pipeline（6）Weld reinforcement coupling it is good；7）Data acquisition：In phased array detection device（3）Upper click starts to detect, and rotates phased array probe stent（1）, make phase Control battle array probe（4）Data acquisition, phased array probe are carried out when making circumferential movement along weld reinforcement（4）Data are adopted after rotating a circle Collection terminates and preserves；8）Data evaluation：After transferring gathered data and carrying out data fusion and linkage processing, interlayer is measured not by A sweep view Initial position, depth and the length working as discharge amplitude and depth, lack of inter-run fusion defect is measured by B-scan view of fusion defect Degree, position of the view dynamic observation lack of inter-run fusion defect in weld seam is scanned by D.
- 8. the method for detection small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect according to claim 7, it is special Sign is：The step 1）In, phased array probe（4）Using 2.5-10MHz, 16-64 chips, array element center spacing is 0.2- The phased array probe of 1.0mm.
- 9. the method for detection small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect according to claim 8, it is special Sign is：The step 2）In, according to docking pipe diameter and weld reinforcement, abrasionproof nail is adjusted by using interior hex tool（10） Length is to appropriate length, subsequently to make transverse concave groove（7）Coupled with weld reinforcement well.
- 10. the method for detection small-bore pipe dissimilar steel butt weld lack of inter-run fusion defect according to claim 9, it is special Sign is：The step 3）In, ultrasound examination waveform selection compressional wave, and respectively -10 ° to -2 ° of refraction angle, 0 °, 2 ° to 10 °, The depth of focus docks pipeline wall thickness for 1/4-1.
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